Practical guides, attack technique breakdowns, and security insights for developers, pentesters, and small security teams.
The 7 best DMARC monitoring tools compared — features, pricing, free tiers, and who each is best for. Includes EdgeIQ, dmarcian, MXToolbox, EasyDMARC, Valimail, and Postmark. With a disclosure: we're on this list and we tell you when a competitor is the better fit.
Read article →MXToolbox is great for manual diagnostics — but it doesn't alert you when something breaks. These 5 alternatives monitor continuously, automate alerts, and most start free. Covers EdgeIQ, dmarcian, EasyDMARC, Postmark Digests, and SecurityTrails.
Read article →Zero trust isn't just for enterprises. This practical guide shows small businesses how to implement zero trust principles — strong MFA, least privilege, device management, continuous monitoring — without a dedicated security team or six-figure budget.
Read article →Real phishing email examples from 2026 — Microsoft sign-in alerts, DocuSign envelopes, CEO wire fraud, payroll redirect, and shared file lures. The typos are gone; here's how to spot every pattern and the technical controls that stop them.
Read article →If your emails are landing in spam, your domain may be blacklisted. Here's how to check every major blacklist — Spamhaus, Barracuda, Google Postmaster — why domains get listed, and the exact steps to get removed and stay off.
Read article →The average company has 200+ OAuth apps connected to Google Workspace or M365 — and most were never explicitly approved. Here's how to audit every connected app in both platforms, which high-risk scopes to revoke, and how to prevent unauthorized connections going forward.
Read article →DKIM adds a cryptographic signature to outgoing emails so recipient mail servers can verify the message wasn't tampered with in transit. Here's how it works, how to check your current selectors, and how to set it up for Google Workspace, Microsoft 365, and third-party senders.
Read article →BEC attacks cost businesses $2.9 billion last year — more than ransomware. No malware, no links, just a convincing email and a wire transfer. Here are the 5 attack types, the red flags your team needs to know, and 9 controls that stop them.
Read article →Attack surface management sounds like an enterprise term — but every small business has an attack surface, and most of it is invisible to them. Here's what ASM actually covers, which assets matter most, and how to build a free monitoring stack that runs automatically.
Read article →Attackers have a simple answer to MFA: flood you with push notifications until you tap "approve" just to make them stop. This works. Here's how MFA fatigue attacks operate, how to configure number matching in M365 and Google Workspace, and which MFA types are actually phishing-resistant.
Read article →M365 account compromises are often silent for weeks. Attackers set up forwarding rules, add OAuth apps, and wait. These 7 signs reveal an active intrusion — plus an 8-step response checklist to lock down a compromised account before data leaves your org.
Read article →If your DMARC is set to p=none, attackers can still spoof your domain. Here's the step-by-step path from p=none to p=reject — auditing sending services, fixing SPF and DKIM alignment, and avoiding the mistakes that block your own legitimate mail.
Read article →Most businesses that have a DMARC record are still on p=quarantine — or worse, p=none. Only p=reject actually blocks spoofed email from reaching inboxes. Here's the difference, the right migration path, and the 5 mistakes that break legitimate email when you move too fast.
Read article →Most Microsoft 365 breaches exploit the same misconfigurations: MFA disabled for a few accounts, legacy auth left open, a stale admin who left six months ago still has Global Admin rights. This checklist closes those gaps in under an hour.
Read article →Google Workspace defaults optimise for collaboration, not security. These 8 checks — covering 2-step verification enforcement, external Drive sharing, OAuth app access, and more — take under an hour and close the gaps most commonly exploited in GWS breaches.
Read article →Right now, someone may have registered a domain that looks almost exactly like yours. Typosquatting, homoglyph attacks, keyword-append domains — here's how attackers build and use lookalike domains, how to find existing ones, and how to catch new impostors automatically.
Read article →AI tools now generate flawless, personalized phishing emails at scale — click rates are 4x higher than traditional templates. Traditional awareness training is no longer enough. Here's what changed and how to actually prepare your team.
Read article →62% of breaches now involve a third-party vendor. Attackers have learned that targeting a small supplier is easier than breaching the larger company directly. Here's how to monitor your vendor risk before it becomes your incident.
Read article →Attackers can send emails appearing to come from your domain with no account compromise required. ~90% of SMB domains have no DMARC enforcement. Here's how to check yours and close the gap in five steps.
Read article →Your emails are spoofable right now — and you probably don't even know it. Here's how to check your DMARC record, understand p=reject vs p=quarantine, and run through a 10-point compliance checklist.
Read article →Most SaaS teams don't find out their webhook retry logic is broken until payments actually fail. Here's the pre-outage checklist, during-outage playbook, and recovery runbook that keeps you operational when Stripe goes dark.
Read article →Expired S3 buckets. Abandoned GitHub Pages. Forgotten SaaS trials. Dangling DNS records are how attackers hijack your subdomain and serve phishing from your own domain — here's how to check if you're exposed.
Read article →A practical, low-noise SQL injection testing workflow for forms, URL params, and APIs — plus what to fix first.
Read article →How to validate redirect URI controls, state, PKCE, and token handling without breaking your auth flow.
Read article →Fast phishing triage with SPF, DKIM, DMARC, source IP checks, and reply-path mismatch detection.
Read article →A practical ransomware prep checklist for small teams: backup validation, MFA coverage, endpoint hardening, and first-day response readiness.
Read article →How admin portals get discovered in minutes and the controls that shut down the easiest attack paths.
Read article →The object storage mistakes that cause preventable data leaks—and the weekly checks that catch drift early.
Read article →The auth and authorization mistakes that still cause most API breaches—and the short hardening sequence to close them fast.
Read article →A practical triage model for small teams: exploitability, exposure, impact, and controls—with clear SLA targets.
Read article →A first-day incident response checklist for small teams: contain, preserve evidence, scope impact, and recover cleanly.
Read article →A practical 30-minute routine to reduce risk every week: what to check, what to escalate, and how to prioritize fixes that actually matter.
Read article →Stop domain spoofing without wrecking deliverability. The practical setup and rollout path for SPF, DKIM, and DMARC.
Read article →Dangling CNAMEs, stale DNS records, permissive AXFR, and TXT leakage — the DNS mistakes attackers love and how to fix them fast.
Read article →Subdomain takeovers are one of the most overlooked — and most exploitable — attack vectors targeting small businesses and enterprise alike. Here's what they are, how attackers find them, and how to lock yours down.
Read article →Misconfigured APIs leak data, expose admin panels, and create attack surfaces that scanners miss. Here's the reconnaissance workflow security researchers use to find them — and how you can protect yours.
Read article →CT logs, AXFR zone transfers, NSLOOKUP enumeration, permutation fuzzing, and OWASP Amass chaining — the modern recon playbook security researchers actually use to map entire attack surfaces.
Read article →CSP too permissive, HSTS max-age too short, nosniff missing, Referrer-Policy leaking data — the 8 security headers that stop entire attack classes, and why so few sites get them right.
Read article →DNS records, CT logs, exposed dev servers, LinkedIn org charts, leaked credentials — the reconnaissance phase is public, automatic, and faster than most businesses realize. Here's what attackers find and how to take control of your exposure.
Read article →Your employees are the first line of defense — and the most likely point of failure. Here's how phishing simulations fix that.
Read article →Your company's data is likely already on the dark web. Here's what that means, how to find out, and what to do about it.
Read article →Your forgotten dev servers, test environments, and old staging sites are low-hanging fruit for attackers. Here's how they find them.
Read article →You don't need a dedicated security team to stay significantly more secure than the average small business. Here's the prioritized checklist that covers what actually matters in 2026 — without the noise.
Read article →SSL certificates silently expire and cost you customers before you even know it. Here's how to check yours right now.
Read article →Most free security scanners either miss everything or cry wolf on nothing. Here's what actually works.
Read article →Your company data could already be on the dark web and you wouldn't know it. Here's how dark web monitoring works.
Read article →XSS is the most common web vulnerability and most scanners miss it in dynamic, JavaScript-heavy apps. Here's how to find it.
Read article →Every forgotten subdomain is a potential entry point. Here's how to find all of yours before attackers do.
Read article →APIs are the most exposed attack surface in modern web apps. Here's how to find and test them for free.
Read article →Brand impersonation phishing uses your own domain to betray your customers' trust. Here's how to find out.
Read article →HIPAA and PCI-DSS compliance for small business — practical path without the enterprise budget.
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